Lamp



FIG. 1 is a top front perspective view of a lamp, showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 3 is a right side elevation view thereof, the left side elevation view being a mirror image thereof;

FIG. 4 is a top elevation view thereof; and,

FIG. 5 is a bottom elevation view thereof.

The broken lines shown in the drawings depict portions of the lamp that form no part of the claimed invention. 

CLAIM The ornamental design for a lamp, as shown and described. 